Hulling-machine.



PATENTED AUG. 30, 1904.

H. KURTH. HULLING MACHINE.

APPLICATION FILED JULY 26, 1902.

N0 MODEL.

H mm NH: N y A N N n M Q a MW mm 1! 1 KYMN ii 3. .\n h h M QM M v .WN N %\km H W N h \m 3 UNITED STATES Patented August 30, 1904.

PATENT OF ICE.

HANS KURTI-I, OF PORTLAND, OREGON, ASSIGNOR OF ONE-HALF TO SAMUEL OONNELL, OF PORTLAND, OREGON.

' HU LLlNG-MACHI'NE.

SPECIFICATION forming part of Letters Patent No. 769,095, dated August 30, 1904.

Applicationfiled July 26, 1902. I Serial No. 117,115. (No model.)

To all whom it may concern: 7

Be it known that I, HANS KURTH, a citizen of the United States, residing at Portland-in the county of Multnoniah and Stateof Oregon, have invented certain new and useful Improvements in Hulling-Machines, of which the following is a specification.

My invention has relation to improvements in cleaning and. hulling grain, and more particularly for hullingoats'; and it consists in the construction and arrangement of parts, as will be hereinafter described, and pointed out in the claim.

I have fully and clearly illustrated my invention in the accompanying drawings, wherein- Figure 1 is a vertical longitudinal section of the complete machine embodying my invention. Fig. 2 is a section on line 2 2, Fig. 1. Fig. 3 is a detail sectional view taken on the line 3 3, Fig. 1.

Referring to the drawings, 1 ldesignate end supporting-standards, which are'suitably fastened ,to a proper foundation and which are of such strength and dimensions as may be required'to efliciently serve the purpose for which they are employed. These standards consist, preferably, of plates of metal formed with marginal strengthening-flanges 2 and at a point ad acent their upper portions are provided with intermediate bearings 3 3,

' the purpose of which will be morefully set forth hereinafter. These standards are placed in alinement with each other, and intermediate thereof is arranged an outer conical shell 4, said shell being provided at its ends with inwardly-projecting flanges 5 5, which abut the inner faces of the. standards 1 1 and are shell 4 is preferably constructed of upper and lower sections 7 which sections are provided at their longitudinal edges with outwardlyprojecting flanges '8, which abut each other when the sections are placed in position to form the shell and are secured together by bolts 9. At its smaller end and withinthe upper side thereof the conical shell 1 is provided with an inlet 10, through which grain from a suitable source of supply is introduced into the machine, while at the larger end, upon the lower side, is an outlet 11, from which the grain is discharged into a suitablereceptacle. Between the closed smaller end of the shell and that of the drum 1 provide a feed-recep- 'concave surface with longitudinally squared or rectangular teeth 12, which serve as baffles or beaters in cleaning the hulls from the grain. Within the shell 4. and extending longitudinally thereof is a conical drum 13, said drum being adapted to rotate within the shell and being provided on its outer surface with longitudinal teeth 14:, similar in form to those arranged in the same parallel line as those on the concave face of the shell 4.. This drum 13 is suitably fastened to a removable shaft 15, which shaft extends through the bearings 3 3 in the standards 1 land is provided at one end with a'driving-pulley 16, having connection with a suitable source of power.

Secured to one of the standards 2 and on the outer face thereof is a bracket 17, which bracket is curved upwardly to'a point iii line.

with the bearings 3 in the said standard and is provided with a suitable bearing arranged opposite to and in line with one of the intermediate bearings of the standards, in which. one end of the shaft 15 is journaled. Upon the opposite standard to that just mentioned is fastened a second bracket 18, having formed therein a longitudinally earranged slot 19, along the upper edges of the side walls of whichare provided grooves 20, constituting guides for an adjustable bearing-block 21. This block 21 is of any suitable form and has formed therein a bearing in which the end of the'shaft 15 is journaled and is provided with a depending portion 22, which extends down within the longitudinally-arranged slot in the bracket and has formed therein a threaded aperture, which aperture is arranged so as to be engaged by an ad justing-screw 23, rotatably mounted within the end of the bracket and provided with a hand-wheel 24, substantially as shown. At a proper point the side faces of the bearing-block are provided with guideribs 25, which ribs are disposed within the guides 20 and in which the said block is adapted to slide. The ribs and grooves constituting the guides are preferably of dovetail form in cross-section, whereby the bearing-block is prevented from vertical displacement. The shaft 15, which has its bearing within the bearing-block, is arranged opposite to and in line with the other intermediate bearing of the standard, said hearing being provided with two collars 26 26, which are arranged upon either side of the bearing, whereby endwise movement of the shaft 15 through the bearing is prevented. It will thus be seen that by the rotation of the handwheel 24 the bearing-block 21 and the shaft 15 may be withdrawn from the shell 4: or moved into closer relation therewith, according to the direction in which the said wheel is turned.

The operation of the invention is obvious, but may be rehearsed as follows: The drum 13 has imparted thereto a rapid rotary motion, and as soon as the desired speed has been reached the oats to be hulled are introduced through the inlet 10 and by virtue of the high speed of the drum are caught up thereby and drawn within the space between the drum and the shell 4. When the grain has been drawn within the space mentioned, the speed developed by the drum catches the grain and by centrifugal force throws it against the ribs on the concave face of the shell 4, and thereby loosens and releases the hull from the kernel. The movement of the ribs on the drum with relation to the ribs on the shell causes the grain to take an endover-end movement, which movement successfully and expeditiously removes the hulls without grinding or in any way crushing the kernels.

What I claim is An oat-hulling machine comprising a coneshaped shell, standards with intermediate openings for supporting and closing the ends of the shell, an inlet and outlet arranged respectively at the upper and. lower corners of the shell, the inner surrounding surface of the shell having longitudinal rows of squaretoothed beaters arranged at suitable distances apart thereon, a cone-shaped sectional drum having closed ends and a solid body portion, a removable shaftmoun ted in the openi ngs of the drum and in the intermediate openings of the shell, said drum being provided on its outer periphery with toothed heaters constructed of the same configuration and arranged parallel with those of the shell, brackets on the standards having hearings in front of the intermediate bearings to support the shaft in connection with the intermediate bearings, means on one end of the shaft for rotating the same in its bearings, means coacting with the opposite end of the shaft, whereby to adjust the beaters of said drum to or from the beaters of the casing, and a feed-receptacle below the inlet arranged between the smaller closed ends of the shell and drum, said rcceptacle extending below the drum so as to form an outlet for the grain to the beaters of the shell and drum, substantially as specified.

In testimony whereof I aliix my signature in presence of two witnesses.

HANS KURTH.

Witnesses:

H. B. CORNELL, CHAS. P. LITTLE. 

